RoHS ( Restriction of Hazardous Substance, Directive 2002/95/EC) restricts hazardous material content in products that will be sold into Euorpe. Otehr countries are adopting these restrictions or are proposing legislation similar to this.

CWS Coil Winding Specialist products are fully in compliance with the RoHS Directive since June 1st, 2004. All products manufactured from our factory in China after June 1st, 2004 are in full compliance of this directive.

CWS Coil
Winding Specialist or CWS began
as a design center for custom inductors, chokes, and transformers in
the early 1980s in California.

Today,
CWS, still based in California is a division of Coilws.com, Inc.,
and is staffed with professional engineers trained in power electronics
and magnetic.

Coilws.com, Inc. owns a very modern and efficient 70,000 square foot, low
cost factory in Dong Guan called "Lion Electronics Enterprises CWS Coil Winding Specialist" which is registered in China. Please go to "CWS
Production Factory" for more details.

CWS provides
full service from design, prototyping, pre-production run to volume
production. All of CWS engineers have at least 10 years of experience
in designing and manufacturing of magnetic components such as inductor,
choke, coil and transformer for many applications. These inductor, choke,
coil, and transformer are designed with ferrites, iron powder, MPP,
sendust or high flux cores in all shapes and sizes. Please go to "
Design Consulting" to review our engineers background and experience.

Most designs,
prototyping and pre-productions of inductors, chokes and transformers
are done at our Santa Ana, California location. Volume productions are
done at our ISO 9000 approved manufacturing facility in China. Since the prototyping and pre-productions are done in Santa
Ana, we can offer our customer the fastest delivery for prototypes
and lower volume pre-production requirements where lead times are extremely
important. Typical delivery from design to pre-production is 2 days
to 2 weeks. For those products manufactured in the U.S., the cost will
naturally be higher, but the delivery is very short. For high volume
production, our prices are one of the most competitive in the market
place. Our prices are factory direct with very low overhead so
that we can pass the savings to our customers. For volume productions,
we will beat our competitor's prices. We do not do expensive print advertisements
in magazines, or have high powered sales personnel. Most of our business
come from referrals from our satisfied customers.

Our team
of experts can help you with your entire coil winding, inductor, choke,
coil and transformer designing needs. We will wind anything.
We have the capability to verify your designs, test your ideas and concepts,
as well as build your magnetic products to your specifications. We welcome
your samples and will manufacture according to your sample configurations
to match its performance and specifications.

We are
competitive with any of the inductor or chokes manufactured by Coilcraft,
Pulse, Renco, Taiyo Yuden, TDK, Toko, Wilco, Coiltronics, Gowanda, JW
Miller, Frontier, Delevan, ACT, Murata Erie. Many of the products
supplied by these companies are manufactured by similar factories in
Asia.The QC systems are similar and we guarantee the quality of our
products to be as good or better than our competitors. In addition,
we will lower your cost as our overhead is much lower than our competitors.
Most importantly, we will deliver the products to you on time, every
time.

We have
over 50,000 types of raw materials to select from when making a coil,
choke, inductor, transformer or antenna. We build surface mount and
through hole type products. We have in stock every imaginable wire types
and gauges to wind anything for you.

We have
both manual equipment and sophisticated winding machines to handle any
job, large or small. Our operators are specially selected and trained
for winding delicate and extremely thin wires on miniature cores. We
have other operators who have been specially trained to manually wind
heavy gauge wires. For example, our 5Kw to 10Kw, 3 to 30 MHz transmissions
line transformer uses AWG 10 wires with Teflon sleeve, are extremely
difficult to wind, but we wind them all!

Our sophisticated
instruments have the ability to test and measure all parameters from
DC to 1 GHz. Some of our equipment are custom designed to test specific
parameters such as flux density, permeability of materials, B-H curves,
DC bias, etc.

We can
varnish, vacuum impregnate, and encapsulate your entire winding jobs.
We use soft epoxy materials to ensure that the stress on the cores is
minimized to maintain its inductance, Q, and losses.

Please
send us or fax us your product specifications and requirements.

This
web site is constantly being updated and changed. We will add more and
more information and application guides to help you, our valued customers.
Many of the descriptions are educational in nature, with some theories
and technical tips and are intentionally simplified to facilitate easy
understanding. This will be particularly helpful to some system engineers
who may not be very familiar with magnetic, inductors, chokes, coils,
transformers, etc. to better understand how these devices behave. Your
feedback is very important for us for continual improvement of this
web site. If you need information on some areas not covered in our web site,
please let us know. Our engineers can write application notes specifically
to meet your needs and post them on this site.